EP3527112B1 - Mécanisme d'entraînement d'enrouleur de cordelette de rideau - Google Patents

Mécanisme d'entraînement d'enrouleur de cordelette de rideau Download PDF

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Publication number
EP3527112B1
EP3527112B1 EP17909416.4A EP17909416A EP3527112B1 EP 3527112 B1 EP3527112 B1 EP 3527112B1 EP 17909416 A EP17909416 A EP 17909416A EP 3527112 B1 EP3527112 B1 EP 3527112B1
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EP
European Patent Office
Prior art keywords
shaft
transition
base
driving
middle shaft
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EP17909416.4A
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German (de)
English (en)
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EP3527112A1 (fr
EP3527112A4 (fr
Inventor
Zhenbang Lei
Xingbang Lei
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Classifications

    • E—FIXED CONSTRUCTIONS
    • E06—DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL; LADDERS
    • E06B—FIXED OR MOVABLE CLOSURES FOR OPENINGS IN BUILDINGS, VEHICLES, FENCES OR LIKE ENCLOSURES IN GENERAL, e.g. DOORS, WINDOWS, BLINDS, GATES
    • E06B9/00—Screening or protective devices for wall or similar openings, with or without operating or securing mechanisms; Closures of similar construction
    • E06B9/56—Operating, guiding or securing devices or arrangements for roll-type closures; Spring drums; Tape drums; Counterweighting arrangements therefor
    • E06B9/60—Spring drums operated only by closure members
    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47H—FURNISHINGS FOR WINDOWS OR DOORS
    • A47H11/00—Curtain cord appurtenances
    • A47H11/06—Cord pulleys
    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47H—FURNISHINGS FOR WINDOWS OR DOORS
    • A47H5/00—Devices for drawing draperies, curtains, or the like
    • A47H5/02—Devices for opening and closing curtains
    • E—FIXED CONSTRUCTIONS
    • E06—DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL; LADDERS
    • E06B—FIXED OR MOVABLE CLOSURES FOR OPENINGS IN BUILDINGS, VEHICLES, FENCES OR LIKE ENCLOSURES IN GENERAL, e.g. DOORS, WINDOWS, BLINDS, GATES
    • E06B9/00—Screening or protective devices for wall or similar openings, with or without operating or securing mechanisms; Closures of similar construction
    • E06B9/24—Screens or other constructions affording protection against light, especially against sunshine; Similar screens for privacy or appearance; Slat blinds
    • E06B9/26—Lamellar or like blinds, e.g. venetian blinds
    • E06B9/28—Lamellar or like blinds, e.g. venetian blinds with horizontal lamellae, e.g. non-liftable
    • E06B9/30—Lamellar or like blinds, e.g. venetian blinds with horizontal lamellae, e.g. non-liftable liftable
    • E06B9/32—Operating, guiding, or securing devices therefor
    • E06B9/322—Details of operating devices, e.g. pulleys, brakes, spring drums, drives
    • E—FIXED CONSTRUCTIONS
    • E06—DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL; LADDERS
    • E06B—FIXED OR MOVABLE CLOSURES FOR OPENINGS IN BUILDINGS, VEHICLES, FENCES OR LIKE ENCLOSURES IN GENERAL, e.g. DOORS, WINDOWS, BLINDS, GATES
    • E06B9/00—Screening or protective devices for wall or similar openings, with or without operating or securing mechanisms; Closures of similar construction
    • E06B9/56—Operating, guiding or securing devices or arrangements for roll-type closures; Spring drums; Tape drums; Counterweighting arrangements therefor
    • E06B9/68—Operating devices or mechanisms, e.g. with electric drive
    • E—FIXED CONSTRUCTIONS
    • E06—DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL; LADDERS
    • E06B—FIXED OR MOVABLE CLOSURES FOR OPENINGS IN BUILDINGS, VEHICLES, FENCES OR LIKE ENCLOSURES IN GENERAL, e.g. DOORS, WINDOWS, BLINDS, GATES
    • E06B9/00—Screening or protective devices for wall or similar openings, with or without operating or securing mechanisms; Closures of similar construction
    • E06B9/24—Screens or other constructions affording protection against light, especially against sunshine; Similar screens for privacy or appearance; Slat blinds
    • E06B9/26—Lamellar or like blinds, e.g. venetian blinds
    • E06B9/28—Lamellar or like blinds, e.g. venetian blinds with horizontal lamellae, e.g. non-liftable
    • E06B9/30—Lamellar or like blinds, e.g. venetian blinds with horizontal lamellae, e.g. non-liftable liftable
    • E06B9/32—Operating, guiding, or securing devices therefor
    • E06B9/322—Details of operating devices, e.g. pulleys, brakes, spring drums, drives
    • E06B2009/3225—Arrangements to aid the winding of cords rollers

Definitions

  • the present invention relates to driving mechanisms for cord winding reels and, more particularly to a driving mechanism for curtain cord winding reels.
  • a traditional curtain is usually controlled by a drawstring to close or open the curtain.
  • An end of the drawstring is wound on a cord winding reel of a coiling-and-uncoiling device.
  • a driving mechanism of the coiling-and-uncoiling device drives the reel to rotate to wind or unwind the drawstring, so as to achieve the purpose of closing or opening the curtain.
  • a current driving mechanism for cord winding reels usually uses an elastic member to drive the reels to rotate.
  • the drawstring is manually pulled to positively rotate the reels to wind the drawstring.
  • the rotation of the reels will drive rollers coaxial with the reels of the driving mechanism to rotate positively, so as to deform the elastic member connected to the rollers. Therefore, binding the drawstring to a preset position can achieve the closing of the curtain.
  • the drawstring is released, and the rollers are reversely rotated under the elastic action of the elastic member to drive the reels to reversely rotate. Therefore, the drawstring is unwound from the reels, and the curtain is then opened.
  • a current driving mechanism for cord winding reels is usually only configured with a single elastic member to drive the reels to rotate.
  • the elastic effect of a single elastic member is not enough to achieve the closing of the curtain. It is difficult to coordinate the consistency of all driving mechanisms if multiple driving mechanisms are configured, and the assembly difficulty of the multiple driving mechanisms is increased.
  • Document US 2014/262062 A1 discloses an apparatus for reducing the space requirements of a flat type spring formed to produce a negative gradient torque.
  • a retainer can be added over at least two coils on the free end of each spring to reduce the space requirement for the spring.
  • a flat type spring with a negative gradient having reduced space requirements into a shade or blind can be incorporated. Such a shade or blind will then be able to fit into a smaller area or volume.
  • Multiple springs restrained in accordance with the subject invention to achieve a desired counterbalancing of the shade or blind can be used.
  • Document US 2014/305601 A1 discloses a shade system with a torque profile, where the shade system is connected with a drive shaft.
  • a first spring system is connected with the drive shaft where the first spring system is a standard wound spring system.
  • a second spring system is connected with the drive shaft where the second spring system is a reverse wound spring system and where, in combination, the first spring system and the second spring system produce a counterbalance torque profile approximately equal to the shade system torque profile.
  • Document EP 2 071 183 A2 discloses user-free shading system, with a first spring unit consisting of a constant force spring, a spring axis, a spring receptacle and a housing, wherein the first spring unit is connectable by means of a coupling device with at least one second spring unit.
  • Document US 2011/000628 A1 discloses a modular blind transport system for a window blind application wherein the complete system may be assembled from a relatively small number of individual modules to obtain counterbalanced blinds wherein a relatively small external input force may be used to raise or lower the blind, and/or to open or close the blind.
  • the technical problem to be solved by the embodiments of the present invention is to provide a driving mechanism for curtain cord winding reels, which is simple and reliable in structure, simplifies assembly of the driving mechanism, and improves the torque of the driving mechanism.
  • an embodiment of the present invention provides a driving mechanism for curtain cord winding reels.
  • the driving mechanism includes at least one driving module and first and second transition shafts respectively mounted to two sides of the at least one driving module and connected to the cord winding reels by drive connection.
  • Each of the at least one driving module includes a base, a power member assembled in the base, and a middle shaft connected to the power member by drive connection and mounted to two sides of the base with first and second ends.
  • the first and second ends of the middle shaft extend out of the sides of the base.
  • An end surface of the first end defines a first shaft hole.
  • the second end forms a first axis.
  • the first and second transition shafts are respectively connected to the first and second ends of the middle shaft.
  • An end of the first transition shaft connected to the middle shaft forms a second axis.
  • An end of the second transition shaft connected to the middle shaft defines a second shaft hole.
  • Cross sections of the first shaft hole, the second shaft hole, the first axis, and the second axis are matched with one another, and the cross sections are non-circular.
  • the power member is a clockwork spring, an inner end of the clockwork spring is connected to the base through a spring shaft, and an outer end of the clockwork spring is connected to the middle shaft.
  • the middle shaft includes two end plates formed at the first and second ends of the middle shaft, an outer surface of the middle shaft is connected to the outer end of the clockwork spring and cooperates with inner side surfaces of the two end plates to form a winding space for accommodating the clockwork spring.
  • the at least one driving module includes two or more driving modules, the two or more driving modules are connected in series to form a long strip of drive module group, the first axis at the second end of each of the two or more driving modules that are sequentially connected is engaged in the first shaft hole of the first end of the middle shaft of an adjacent driving module, the first axis of the second end of the driving module located at the foremost end of the driving module group is correspondingly engaged in the second shaft hole of the second transition shaft, the second shaft of the first transition shaft is engaged in first shaft hole of the first end of the driving module at the rear end of the drive module group.
  • the sides of the base form two end covers to define two limit spaces together with the base, to limit the first transition shaft and the second transition shaft, the end covers define through holes through which the first transition shaft and the second transition shaft respectively extend out of the corresponding limit spaces, ends of the first transition shaft and the second transition shaft located in the corresponding limit spaces form rings, and outer diameters of the rings are greater than inner diameters of the through holes.
  • end covers are fixed to outer surfaces of the base through screws.
  • the base is a housing defining a hollow chamber, and the power member and the middle shaft are both assembled in the hollow chamber.
  • the beneficial effects of the inventive embodiment of the present invention are as follows.
  • the two ends of the middle shaft of the embodiment of the present invention respectively form the first axis and the first shaft hole
  • the end of the first transition shaft connected to the middle shaft forms the second axis
  • the end of the second transition shaft connected to the middle shaft defines the second shaft hole.
  • the cross sections of the first shaft hole, the first axis, the second shaft hole, and the second axis are non-circular. Therefore, the power transmission efficiency of the at least one driving module is effectively improved, and the assembly of the at least one driving module is convenient.
  • a single driving module or a plurality of driving modules connected in combination can be used to meet different requirements of the winding force of various specifications of the curtain, and the structure of the driving mechanism is simple and reliable, and the assembly is convenient.
  • an embodiment of a driving mechanism for curtain cord winding reels of the present disclosure includes at least one driving module 1, and first and second transition shafts 2 and 3 respectively mounted to two sides of the at least one driving module 1 and connected to the cord winding reel (not shown) by drive connection.
  • Each driving module 1 includes a base 11, a power member 12 assembled in the base 11, and a middle shaft 13 connected to the power member 12 by drive connection and mounted to two sides of the base 11 with two opposite ends.
  • First and second ends of the middle shaft 13 are extended out of the sides of the base 11.
  • An end surface of the first end of the middle shaft 13 defines a first shaft hole 131, and the second end of the middle shaft 13 forms a first axis 132.
  • the first transition shaft 2 and the second transition shaft 3 are respectively connected to the first end and the second end of the middle shaft 13.
  • An end of the first transition shaft 2 connected to the middle shaft 13 forms a second axis 21.
  • An end of the second transition shaft 3 connected to the middle shaft 13 defines a second shaft hole 31.
  • Cross sections of the first shaft hole 131, the second shaft hole 31, the first axis 132, and the second axis 21 are matched with one another, and the cross sections are non-circular, such as being triangular, pentagonal, hexagonal, rectangular, elliptical, convex, or other irregular shapes.
  • the driving mechanism includes a driving module 1.
  • Shapes of the cross sections of the first shaft hole 131, the second shaft hole 31, the first axis 132, and the second axis 21 are all regular hexagons, which can effectively avoid that the middle shaft 13 slides between the first transition shaft 2 and the second transition shaft 3 during the rotation process and avoid that the middle shaft 13 cannot drive the reels to wind or unwind the drawstring because of the slide of the middle shaft 13. Therefore, the power transmission efficiency between the middle shaft 13 and the first and second transition shafts 2 and 3 can be effectively improved, and the assembly of the first shaft hole 131, the second shaft hole 31, the first axis 132, and the second axis 21 is convenient.
  • the first axis 132 and the first shaft hole 131 are respectively disposed at two ends of the middle shaft 13, the second axis 21 is disposed at the end of the first transition shaft 2 connected to the middle shaft 13 and the second shaft hole 31 is disposed at the end of the second transition shaft 3 connected to the middle shaft 13, and cross sections of the first shaft hole 131, the second shaft hole 31, the first axis 132, and the second axis 21 are non-circular, so that the power transmission of the driving module 1 can be effectively improved and the assembly is convenient.
  • a single driving module 1 or a plurality of driving modules 1 connected in combination can be used to meet different requirements of the winding force of various specifications of the curtain, and the structure of the driving mechanism 1 is simple and reliable, and the assembly is convenient.
  • the power member 12 is a clockwork spring.
  • An inner end of the clockwork spring is assembled in the base 11 through a spring shaft 14, and an outer end of the clockwork spring is connected to the middle shaft 13.
  • the clockwork spring is used as the power member 12 to drive the middle shaft 13 to rotate.
  • the outer end of the clockwork spring is connected to the middle shaft 13.
  • the drawstring of the curtain is manually pulled to rotate the reels thereby closing the curtain, the reels will drive the middle shaft 13 to rotate together to cause the clockwork spring to be deformed and wound on the middle shaft 13.
  • the drawstring is tied to a desired position, the curtain is then closed.
  • the power member 12 can also be set as a motor or other power devices that can drive the middle shaft 13 to rotate.
  • the middle shaft 13 includes two end plates 133 located at the ends of the middle shaft 13.
  • An outer surface of the middle shaft 13 is connected to the outer end of the clockwork spring and cooperates with inner side surfaces of the two end plates 133 to form a winding space for accommodating the clockwork spring.
  • the middle shaft 13 provides the end plates 133 at the ends to form the winding space for accommodating the clockwork spring when the middle shaft 13 rotates, which can effectively avoid that the clockwork spring slides relative to the middle shaft 13 under its own elastic force when the clockwork spring is wound on the middle shaft 13 and avoid that the curtain cannot be closed or opened because of the slide of the clockwork spring, so as to improve the stability of the driving mechanism.
  • the driving mechanism includes two or more driving modules 1.
  • the two or more driving modules 1 are connected in series to form a long strip of driving module group.
  • the first axis 132 at the second end of each of the driving modules 1 that are sequentially connected is engaged in the first shaft hole 131 of the first end of the middle shaft 13 of an adjacent driving module 1.
  • the first axis 132 of the second end of the driving module 1 located at the foremost end of the driving module group is correspondingly engaged in the second shaft hole 31 of the second transition shaft 3.
  • the second shaft 21 of the first transition shaft 2 is engaged in first shaft hole 132 of the first end of the driving module 1 at the rear end of the driving module group.
  • the two or more driving modules 1 are sequentially connected to form the long drive module group.
  • the driving module group includes a long middle shaft assembly that is sequentially connected by a plurality of middle shafts 13, and a plurality of power members 12 that is connected to the middle shafts 13 of the middle shaft assembly to synchronously drive the middle shaft assembly to rotate.
  • the power members 12 cooperate on the middle shafts 13 to enhance the driving force applied on the middle shaft assembly. Therefore, the winding force of the driving mechanism is enhanced, thereby realizing the closing of the curtains of different specifications, so as to effectively improve the practicality of the driving mechanism.
  • the sides of the base 11 form two end covers 16 to define two limit spaces 15 together with the base 11, to respectively limit the first transition shaft 2 and the second transition shaft 3.
  • the end covers 16 define through holes 161 through which the first transition shaft 2 and the second transition shaft 3 respectively extend out of the corresponding limit spaces 15. Ends of the first transition shaft 2 and the second transition shaft 3 located in the corresponding limit spaces 15 form rings 17, and outer diameters of the rings 17 are greater than inner diameters of the through holes 161.
  • the limiting spaces 15 are defined by assembling the base 11 and the end covers 16, to limit and assemble the first transition shaft 2 and the second transition shaft 3.
  • the ends of the first transition shaft 2 and the second transition shaft 3 extend through the through holes 161 of the corresponding end covers 16, and the opposite ends of the first transition shaft 2 and the second transition shaft 3 located in the limit spaces form the rings 17 having the outer diameters greater than the inner diameters of the through holes 161, which can effectively improve the assembly structure strength of the end covers 16 to the first transition shaft 2 and the second transition shaft 3, and improve stability of the driving mechanism.
  • the end covers 16 are fixed to outer surfaces of the base 11 through screws (not shown).
  • the end covers 16 are assembled to the outer surfaces of the base 11 by screws, can be detached from the base 11 by removing the screws to realize the maintenance and repair of the first transition shaft 2 and the second transition shaft 3, and the structure is simple and reliable.
  • the base 11 is a housing defining a hollow chamber, and the power member 12 and the middle shaft 13 are both assembled in the hollow chamber.
  • the base 11 includes the housing defining the hollow chamber and the power member 12 and the center shaft 13 are assembled in the hollow chamber, which provides a good working environment for the power member 12 and the middle shaft 13 to avoid the occurrence of falling ash, etc., thereby avoid reducing the performance of the power member 12 or the middle shaft 13. Therefore, the service life of the driving mechanism is improved.

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  • Engineering & Computer Science (AREA)
  • Structural Engineering (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Blinds (AREA)
  • Curtains And Furnishings For Windows Or Doors (AREA)

Claims (6)

  1. - Mécanisme d'entraînement pour des enrouleurs de cordelette de rideau, comprenant :
    au moins un module d'entraînement (1), chacun de l'au moins un module d'entraînement (1) comprenant une base (11), un élément moteur (12) assemblé dans la base (11), et un arbre central (13) relié à l'élément moteur (12) par liaison d'entraînement et monté sur deux côtés de la base (11) avec des première et seconde extrémités, la seconde extrémité de l'arbre central (13) s'étendant hors du côté de la base (11), une surface d'extrémité de la première extrémité définissant un premier trou d'arbre (13), la seconde extrémité formant un premier axe (132) ;
    caractérisé par le fait que
    le mécanisme d'entraînement comprend en outre des premier et second arbres de transition (2, 3) montés respectivement sur deux côtés de l'au moins un module d'entraînement (1) et aptes à être reliés aux enrouleurs de cordelette par liaison d'entraînement, les premier et second arbres de transition (2, 3) étant respectivement reliés aux première et seconde extrémités de l'arbre central (13), une extrémité du premier arbre de transition (2) reliée à l'arbre central (13) formant un second axe (21), une extrémité du second arbre de transition (2) reliée à l'arbre central (13) définissant un second trou d'arbre (31), des sections transversales du premier trou d'arbre (131) et du second axe (21) étant mises en correspondance l'une avec l'autre, et des sections transversales du second trou d'arbre (31) et du premier axe (132) étant mises en correspondance l'une avec l'autre, et les sections transversales étant non circulaires ; et
    les côtés de la base (11) forment deux flasques latéraux (16) pour définir deux espaces de limitation (15) conjointement avec la base (11), pour limiter la translation du premier arbre de transition (2) et du second arbre de transition (3), les flasques latéraux (16) définissant des trous traversants (161) à travers lesquels le premier arbre de transition (2) et le second arbre de transition (3) s'étendent respectivement hors des espaces de limitation correspondants (15), des extrémités du premier arbre de transition (2) et du second arbre de transition (3) situées dans les espaces de limitation correspondants (15) formant des anneaux (17), et des diamètres extérieurs des anneaux (17) étant supérieurs à des diamètres intérieurs des trous traversants (161).
  2. - Mécanisme d'entraînement pour des enrouleurs de cordelette de rideau selon la revendication 1, dans lequel l'élément moteur (12) est un ressort d'horlogerie, une extrémité intérieure du ressort d'horlogerie est reliée à la base (11) par l'intermédiaire d'un arbre de ressort (14), et une extrémité extérieure du ressort d'horlogerie est reliée à l'arbre central (13).
  3. - Mécanisme d'entraînement pour des enrouleurs de cordelette de rideau selon la revendication 2, dans lequel l'arbre central (13) comprend deux plaques d'extrémité formées aux première et seconde extrémités de l'arbre central (13), une surface extérieure de l'arbre central (13) est reliée à l'extrémité extérieure du ressort d'horlogerie et coopère avec des surfaces latérales intérieures des deux plaques d'extrémité pour former un espace d'enroulement destiné à recevoir le ressort d'horlogerie.
  4. - Mécanisme d'entraînement pour des enrouleurs de cordelette de rideau selon la revendication 1, dans lequel l'au moins un module d'entraînement (1) comprend au moins deux modules d'entraînement, les au moins deux modules d'entraînement sont reliés en série pour former une longue bande de groupe de modules d'entraînement, le premier axe (132) à la seconde extrémité de chacun des au moins deux modules d'entraînement qui sont reliés en séquence est engagé dans le premier trou d'arbre (131) de la première extrémité de l'arbre central (13) d'un module d'entraînement adjacent, le premier axe (132) de la seconde extrémité du module d'entraînement situé à l'extrémité la plus en avant du groupe de modules d'entraînement est engagé de manière correspondante dans le second trou d'arbre (31) du second arbre de transition (3), le second axe du premier arbre de transition (2) est engagé dans le premier trou d'arbre (131) de la première extrémité du module d'entraînement à l'extrémité arrière du groupe de modules d'entraînement.
  5. - Mécanisme d'entraînement pour des enrouleurs de cordelette de rideau selon la revendication 4, dans lequel les flasques latéraux (16) sont fixés à des surfaces extérieures de la base (11) par l'intermédiaire de vis.
  6. - Mécanisme d'entraînement pour des enrouleurs de cordelette de rideau selon la revendication 1, dans lequel la base (11) est un boîtier définissant une chambre creuse, et l'élément moteur (12) et l'arbre central (13) sont tous deux assemblés dans la chambre creuse.
EP17909416.4A 2017-05-09 2017-06-13 Mécanisme d'entraînement d'enrouleur de cordelette de rideau Active EP3527112B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN201720510800.7U CN207590466U (zh) 2017-05-09 2017-05-09 窗帘绕线轮驱动机构
PCT/CN2017/088136 WO2018205338A1 (fr) 2017-05-09 2017-06-13 Mécanisme d'entraînement d'enrouleur de cordelette de rideau

Publications (3)

Publication Number Publication Date
EP3527112A1 EP3527112A1 (fr) 2019-08-21
EP3527112A4 EP3527112A4 (fr) 2020-06-10
EP3527112B1 true EP3527112B1 (fr) 2023-05-24

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EP17909416.4A Active EP3527112B1 (fr) 2017-05-09 2017-06-13 Mécanisme d'entraînement d'enrouleur de cordelette de rideau

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US (1) US11187034B2 (fr)
EP (1) EP3527112B1 (fr)
CN (1) CN207590466U (fr)
WO (1) WO2018205338A1 (fr)

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US9103157B2 (en) * 2013-04-13 2015-08-11 Qmotion Incorporated Spring counterbalance apparatus and method
CN205035012U (zh) * 2015-09-01 2016-02-17 邱永忠 一种晾衣架用卷线器
CN205088483U (zh) * 2015-09-23 2016-03-16 广州晒帝智能科技有限公司 晾衣机的卷线装置
TWM522994U (zh) * 2016-01-29 2016-06-01 Ching Feng Home Fashions Co 簾體收放中控裝置
CN206062839U (zh) * 2016-06-18 2017-04-05 广东金联窗饰有限公司 一种可减速窗帘制头

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WO2018205338A1 (fr) 2018-11-15
US11187034B2 (en) 2021-11-30
US20190211624A1 (en) 2019-07-11
EP3527112A1 (fr) 2019-08-21
EP3527112A4 (fr) 2020-06-10
CN207590466U (zh) 2018-07-10

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